Marine Mammals
Latest about Marine Mammals
![Aerial footage of whale swimming with its calf.](https://cdn.mos.cms.futurecdn.net/ADA2ytUJTnSSpwVggAea6A-320-80.jpg)
Critically endangered right whales are shrinking, with drastic consequences for their population
By Melissa Hobson published
Climate change appears to be causing North Atlantic right whales to get smaller, and it's making them have fewer babies.
![sonar image showing holes in the seafloor](https://cdn.mos.cms.futurecdn.net/VBevTiKHeKeQgLzbsGh5zc-320-80.jpg)
Millions of mystery holes at the bottom of the North Sea are not what scientists thought they were
By Andrew Chapman, Eos.org published
Holes in the seafloor off the coast of Germany looked like those associated with methane. They might actually be the work of porpoises looking for eels.
![Whales bones pictured underwater at the bottom of the seafloor next to a diver against a dark background](https://cdn.mos.cms.futurecdn.net/i6KYtNvW9maB2cfs6izVw7-320-80.jpg)
Eerie photograph captures whales hunted off Greenland lying in their watery grave
By Hannah Osborne published
Haunting image showing two whales with their bones picked clean off the coast of Greenland has won the Underwater Photographer of the Year 2024 competition.
![Sperm whales in the ocean. Underwater photography.](https://cdn.mos.cms.futurecdn.net/nGtyuce8EPvwCfrCFfBXKW-320-80.jpg)
How do marine mammals sleep underwater?
By Cameron Duke published
How can animals that need to breathe air manage to sleep underwater?
![The desiccated remains of a dolphin on a beach](https://cdn.mos.cms.futurecdn.net/ZzgEijHTqgzMCyJVPSv9t3-320-80.jpg)
Haunting 'mummified dolphin' found on US beach may have been dead for months
By Harry Baker published
The highly desiccated remains of a suspected bottlenose dolphin were recently found on a beach in South Carolina after "mummifying" for weeks or even months. One expert believes the animal may have deliberately beached itself.
![A diver swims next to a blue whale](https://cdn.mos.cms.futurecdn.net/ppnEErTaB7stpBmBRQUjYd-320-80.jpg)
Hidden DNA found in blue whales reveals they've been mating with other species — and their hybrid offspring
By Harry Baker published
Newly sequenced genomes of blue whales in the Atlantic Ocean contain "unexpectedly high" levels of fin whale DNA, hinting that the two species have been interbreeding much more than previously realized.
![Bottlenose dolphins.](https://cdn.mos.cms.futurecdn.net/zV8ydkvhMDXrNjYvYQqz3N-320-80.jpg)
Dolphins are 'literally acting like jerks' by beating up baby manatees
By Melissa Hobson published
Bottlenose dolphins have been observed trying to kill Antillean manatee calves, and researchers don't fully understand what's going on.
![A dead seal pup on the beach](https://cdn.mos.cms.futurecdn.net/2Rc2mcKxkcqPwrpdbzFPMM-320-80.jpg)
Bird flu wipes out over 95% of southern elephant seal pups in 'catastrophic' mass death
By Jacklin Kwan published
Over 17,000 southern elephant seal pups were found dead on Argentina's Valdés Peninsula in a horrific mass die off attributed to the deadly H5N1 avian influenza virus.
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